USB wince PDD层部分程序，可以响应USB HOST和OTG底层驱动。由class、client、control三部分组成。-USB wince PDD layer part of the program.OTG USB HOST, and can respond to the underlying driver.By the class, client, control of three parts.

OTG是On-The-Go的缩写，是近年发展起来的技术，2001年12月18日由USB Implementers Forum公布，相关wince的代码如下。-OTG On-The-Go is the acronym for the technology developed in recent years, December 18, 2001 published by the USB Implementers Forum, related code is as follows wince.